diff --git a/chrome-os-best-practices/.gitignore b/chrome-os-best-practices/.gitignore
index 07488ba61..808f1fc86 100755
--- a/chrome-os-best-practices/.gitignore
+++ b/chrome-os-best-practices/.gitignore
@@ -59,6 +59,7 @@
 **/ios/Flutter/app.flx
 **/ios/Flutter/app.zip
 **/ios/Flutter/flutter_assets/
+**/ios/Flutter/flutter_export_environment.sh
 **/ios/ServiceDefinitions.json
 **/ios/Runner/GeneratedPluginRegistrant.*
 
diff --git a/jsonexample/.gitignore b/jsonexample/.gitignore
index 07488ba61..808f1fc86 100644
--- a/jsonexample/.gitignore
+++ b/jsonexample/.gitignore
@@ -59,6 +59,7 @@
 **/ios/Flutter/app.flx
 **/ios/Flutter/app.zip
 **/ios/Flutter/flutter_assets/
+**/ios/Flutter/flutter_export_environment.sh
 **/ios/ServiceDefinitions.json
 **/ios/Runner/GeneratedPluginRegistrant.*
 
diff --git a/jsonexample/pubspec.lock b/jsonexample/pubspec.lock
index fc281a78a..42e9472d1 100644
--- a/jsonexample/pubspec.lock
+++ b/jsonexample/pubspec.lock
@@ -28,7 +28,7 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.3.0"
+    version: "2.4.0"
   boolean_selector:
     dependency: transitive
     description:
@@ -339,7 +339,7 @@ packages:
       name: quiver
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.5"
+    version: "2.1.2+1"
   shelf:
     dependency: transitive
     description:
diff --git a/material_studies/shrine/.gitignore b/material_studies/shrine/.gitignore
index 07488ba61..808f1fc86 100644
--- a/material_studies/shrine/.gitignore
+++ b/material_studies/shrine/.gitignore
@@ -59,6 +59,7 @@
 **/ios/Flutter/app.flx
 **/ios/Flutter/app.zip
 **/ios/Flutter/flutter_assets/
+**/ios/Flutter/flutter_export_environment.sh
 **/ios/ServiceDefinitions.json
 **/ios/Runner/GeneratedPluginRegistrant.*
 
diff --git a/place_tracker/.gitignore b/place_tracker/.gitignore
index 07488ba61..808f1fc86 100644
--- a/place_tracker/.gitignore
+++ b/place_tracker/.gitignore
@@ -59,6 +59,7 @@
 **/ios/Flutter/app.flx
 **/ios/Flutter/app.zip
 **/ios/Flutter/flutter_assets/
+**/ios/Flutter/flutter_export_environment.sh
 **/ios/ServiceDefinitions.json
 **/ios/Runner/GeneratedPluginRegistrant.*
 
diff --git a/platform_design/.gitignore b/platform_design/.gitignore
index 07488ba61..808f1fc86 100644
--- a/platform_design/.gitignore
+++ b/platform_design/.gitignore
@@ -59,6 +59,7 @@
 **/ios/Flutter/app.flx
 **/ios/Flutter/app.zip
 **/ios/Flutter/flutter_assets/
+**/ios/Flutter/flutter_export_environment.sh
 **/ios/ServiceDefinitions.json
 **/ios/Runner/GeneratedPluginRegistrant.*
 
diff --git a/platform_design/pubspec.lock b/platform_design/pubspec.lock
index ce157b123..73cfd5278 100644
--- a/platform_design/pubspec.lock
+++ b/platform_design/pubspec.lock
@@ -7,7 +7,7 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.3.0"
+    version: "2.4.0"
   boolean_selector:
     dependency: transitive
     description:
@@ -94,7 +94,7 @@ packages:
       name: quiver
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.5"
+    version: "2.1.2+1"
   sky_engine:
     dependency: transitive
     description: flutter
diff --git a/platform_view_swift/pubspec.lock b/platform_view_swift/pubspec.lock
index 13809e8e0..1e6783b18 100644
--- a/platform_view_swift/pubspec.lock
+++ b/platform_view_swift/pubspec.lock
@@ -1,27 +1,13 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
-  archive:
-    dependency: transitive
-    description:
-      name: archive
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.0.10"
-  args:
-    dependency: transitive
-    description:
-      name: args
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.5.2"
   async:
     dependency: transitive
     description:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.3.0"
+    version: "2.4.0"
   boolean_selector:
     dependency: transitive
     description:
@@ -43,20 +29,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.14.11"
-  convert:
-    dependency: transitive
-    description:
-      name: convert
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.1.1"
-  crypto:
-    dependency: transitive
-    description:
-      name: crypto
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.1.3"
   cupertino_icons:
     dependency: "direct main"
     description:
@@ -74,13 +46,6 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
-  image:
-    dependency: transitive
-    description:
-      name: image
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.1.4"
   matcher:
     dependency: transitive
     description:
@@ -109,20 +74,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.8.0+1"
-  petitparser:
-    dependency: transitive
-    description:
-      name: petitparser
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.4.0"
   quiver:
     dependency: transitive
     description:
       name: quiver
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.5"
+    version: "2.1.2+1"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -184,12 +142,5 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.8"
-  xml:
-    dependency: transitive
-    description:
-      name: xml
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "3.5.0"
 sdks:
   dart: ">=2.5.0 <3.0.0"
diff --git a/provider_counter/.gitignore b/provider_counter/.gitignore
index 07488ba61..808f1fc86 100644
--- a/provider_counter/.gitignore
+++ b/provider_counter/.gitignore
@@ -59,6 +59,7 @@
 **/ios/Flutter/app.flx
 **/ios/Flutter/app.zip
 **/ios/Flutter/flutter_assets/
+**/ios/Flutter/flutter_export_environment.sh
 **/ios/ServiceDefinitions.json
 **/ios/Runner/GeneratedPluginRegistrant.*
 
diff --git a/provider_shopper/.gitignore b/provider_shopper/.gitignore
index 07488ba61..808f1fc86 100644
--- a/provider_shopper/.gitignore
+++ b/provider_shopper/.gitignore
@@ -59,6 +59,7 @@
 **/ios/Flutter/app.flx
 **/ios/Flutter/app.zip
 **/ios/Flutter/flutter_assets/
+**/ios/Flutter/flutter_export_environment.sh
 **/ios/ServiceDefinitions.json
 **/ios/Runner/GeneratedPluginRegistrant.*